extract .manglof of template with lambda parameters

[Nicholas Wilson via Digitalmars-d-learn]

On Sunday, 24 July 2016 at 06:03:59 UTC, Nicholas Wilson wrote:
> so I have a main as follows
>
> int main(string[] args)
> {
>     int a = 3;
>     map!((int x) => x*x)((GlobalPointer!int(&a)),a);
>     return 0;
> }
>
> I want to get the mangleof of the generated call to map but 
> without referencing it in the .o and then pass the mangleof to 
> another function. the call to map must still be instantiated.
>
> How do I do this?

the mangled name of the call to map is

_D8dcompute5tests4test51__T3mapS40_D4main4mainFAAyaZ9__lambda2FNaNbNiNfiZiZ3mapFNaNbNiNfS8dcompute5types7pointer18__T7PointerVki1TiZ7PointeriZv

But how do I get it at compile time?